HDMI Power On

Hello!
I would like to know, how ZIDOO X8 powering on from HDMI - is it HDMI-CEC command, or only signal on smth pin of HDMI cable?
I noticed, that "auto power on from TV" feature works only sometimes on my Philips TV. I need to power on ZIDOO remotely from other device, and I want to know, how it is possible power on ZIDOO from HDMI? It should be HDMI-CEC command, or correct level on smth pin will be enough?